Merge remote-tracking branch 'cigaes/master'

* cigaes/master:
  lavfi/dualinput: fix shortest option.
  lavfi/vf_tile: use av_make_q.
  lavfi/avf_concat: use av_make_q.
  lavfi/af_amerge: use av_make_q.
  lavu/rational: add syntactic sugar.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/APIchanges

@@ -15,6 +15,9 @@ libavutil:     2012-10-22
 
 API changes, most recent first:
 
+2014-01-19 - xxxxxxx - lavu 52.63.100 - rational.h
+  Add av_make_q() function.
+
 2013-12-xx - xxxxxxx - lavu 53.2.0 - frame.h
   Add AV_FRAME_DATA_MATRIXENCODING value to the AVFrameSideDataType enum, which
   identifies AVMatrixEncoding data.

libavfilter/af_amerge.c

@@ -259,7 +259,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
     outbuf->pts = inbuf[0]->pts == AV_NOPTS_VALUE ? AV_NOPTS_VALUE :
                   inbuf[0]->pts +
                   av_rescale_q(am->in[0].pos,
-                               (AVRational){ 1, ctx->inputs[0]->sample_rate },
+                               av_make_q(1, ctx->inputs[0]->sample_rate),
                                ctx->outputs[0]->time_base);
 
     outbuf->nb_samples     = nb_samples;

libavfilter/avf_concat.c

@@ -174,7 +174,7 @@ static int push_frame(AVFilterContext *ctx, unsigned in_no, AVFrame *buf)
     if (inlink->sample_rate)
         /* use number of audio samples */
         in->pts += av_rescale_q(buf->nb_samples,
-                                (AVRational){ 1, inlink->sample_rate },
+                                av_make_q(1, inlink->sample_rate),
                                 outlink->time_base);
     else if (in->nb_frames >= 2)
         /* use mean duration */

libavfilter/dualinput.c

@@ -57,7 +57,7 @@ int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s)
     in[1].after  = EXT_INFINITY;
 
     if (s->shortest)
-        in[1].after = EXT_STOP;
+        in[0].after = in[1].after = EXT_STOP;
     if (!s->repeatlast) {
         in[0].after = EXT_STOP;
         in[1].sync  = 0;

libavfilter/vf_tile.c

@@ -113,7 +113,7 @@ static int config_props(AVFilterLink *outlink)
     outlink->h = tile->h * inlink->h + total_margin_h;
     outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
     outlink->frame_rate = av_mul_q(inlink->frame_rate,
-                                   (AVRational){ 1, tile->nb_frames });
+                                   av_make_q(1, tile->nb_frames));
     ff_draw_init(&tile->draw, inlink->format, 0);
     ff_draw_color(&tile->draw, &tile->blank, tile->rgba_color);
 

libavutil/rational.h

@@ -45,6 +45,17 @@ typedef struct AVRational{
     int den; ///< denominator
 } AVRational;
 
+/**
+ * Create a rational.
+ * Useful for compilers that do not support compound literals.
+ * @note  The return value is not reduced.
+ */
+static inline AVRational av_make_q(int num, int den)
+{
+    AVRational r = { num, den };
+    return r;
+}
+
 /**
  * Compare two rationals.
  * @param a first rational

libavutil/version.h

@@ -56,7 +56,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  52
-#define LIBAVUTIL_VERSION_MINOR  62
+#define LIBAVUTIL_VERSION_MINOR  63
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \